зеркало из https://github.com/mozilla/gecko-dev.git
108 строки
3.7 KiB
C++
108 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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// * This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_TEXTURECLIENTOGL_H
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#define MOZILLA_GFX_TEXTURECLIENTOGL_H
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#include "GLContextTypes.h" // for SharedTextureHandle, etc
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#include "gfxTypes.h"
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#include "mozilla/Attributes.h" // for MOZ_OVERRIDE
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/layers/CompositorTypes.h"
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#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
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#include "mozilla/layers/TextureClient.h" // for DeprecatedTextureClient, etc
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namespace mozilla {
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namespace layers {
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class CompositableForwarder;
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/**
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* A TextureClient implementation to share TextureMemory that is already
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* on the GPU, for the OpenGL backend.
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*/
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class SharedTextureClientOGL : public TextureClient
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{
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public:
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SharedTextureClientOGL(TextureFlags aFlags);
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~SharedTextureClientOGL();
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virtual bool IsAllocated() const MOZ_OVERRIDE;
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virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
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void InitWith(gl::SharedTextureHandle aHandle,
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gfx::IntSize aSize,
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gl::SharedTextureShareType aShareType,
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bool aInverted = false);
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virtual gfx::IntSize GetSize() const { return mSize; }
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virtual TextureClientData* DropTextureData() MOZ_OVERRIDE
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{
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// XXX - right now the code paths using this are managing the shared texture
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// data, although they should use a TextureClientData for this to ensure that
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// the destruction sequence is race-free.
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MarkInvalid();
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return nullptr;
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}
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protected:
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gl::SharedTextureHandle mHandle;
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gfx::IntSize mSize;
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gl::SharedTextureShareType mShareType;
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bool mInverted;
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};
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class DeprecatedTextureClientSharedOGL : public DeprecatedTextureClient
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{
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public:
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DeprecatedTextureClientSharedOGL(CompositableForwarder* aForwarder, const TextureInfo& aTextureInfo);
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~DeprecatedTextureClientSharedOGL() { ReleaseResources(); }
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virtual bool SupportsType(DeprecatedTextureClientType aType) MOZ_OVERRIDE { return aType == TEXTURE_SHARED_GL; }
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virtual bool EnsureAllocated(gfx::IntSize aSize, gfxContentType aType);
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virtual void ReleaseResources();
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virtual gfxContentType GetContentType() MOZ_OVERRIDE { return GFX_CONTENT_COLOR_ALPHA; }
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protected:
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gl::GLContext* mGL;
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gfx::IntSize mSize;
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friend class CompositingFactory;
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};
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// Doesn't own the surface descriptor, so we shouldn't delete it
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class DeprecatedTextureClientSharedOGLExternal : public DeprecatedTextureClientSharedOGL
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{
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public:
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DeprecatedTextureClientSharedOGLExternal(CompositableForwarder* aForwarder, const TextureInfo& aTextureInfo)
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: DeprecatedTextureClientSharedOGL(aForwarder, aTextureInfo)
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{}
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virtual bool SupportsType(DeprecatedTextureClientType aType) MOZ_OVERRIDE { return aType == TEXTURE_SHARED_GL_EXTERNAL; }
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virtual void ReleaseResources() {}
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};
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class DeprecatedTextureClientStreamOGL : public DeprecatedTextureClient
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{
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public:
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DeprecatedTextureClientStreamOGL(CompositableForwarder* aForwarder, const TextureInfo& aTextureInfo)
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: DeprecatedTextureClient(aForwarder, aTextureInfo)
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{}
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~DeprecatedTextureClientStreamOGL() { ReleaseResources(); }
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virtual bool SupportsType(DeprecatedTextureClientType aType) MOZ_OVERRIDE { return aType == TEXTURE_STREAM_GL; }
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virtual bool EnsureAllocated(gfx::IntSize aSize, gfxContentType aType) { return true; }
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virtual void ReleaseResources() { mDescriptor = SurfaceDescriptor(); }
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virtual gfxContentType GetContentType() MOZ_OVERRIDE { return GFX_CONTENT_COLOR_ALPHA; }
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};
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} // namespace
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} // namespace
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#endif
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